/Engine/Source/Runtime/GeometryCore/Public/MeshQueries.h
Get triangles that contain at least on vertex in the Vertices array.
static [TArray](API\Runtime\Core\Containers\TArray)< int32 > GetVertexSelectedTriangles ( const TriangleMeshType & Mesh, const [TArray](API\Runtime\Core\Containers\TArray)< int32 > & Vertices )